Metalliferous azo-dyestuffs and process of making same



Patented Nov. 21, 1933 we e PAT

UNITED STATES METALLIFEROUS AZO-DYESTUFFS PROCESS or MAKING SAME 7 Fritz Straub, Basel, and Walter Hanhart, Riehen, near Basel, Switzerland, assignors to the firm of' Society of Chemical Industry in Basie,

Basel, Switzerland No Drawing. Application February 13, 1933,

Serial No. 656,619, and in Switzerland February 18, 1932 18 Claims. (Cl. 26012) The present invention relates to new metalliferous azo-d estuffs. It comprises the process of making these dyestuffs, the dyestuffs themselves r and the material dyed with the new products.

According to this invention new valuable metalliferous dyestuffs are obtained by treating with agents yielding metals capable of forming lakes with the lake-forming groups of the dyestuffs, azo-dyestufls of the general formula.

I N on SOaHv in whichR represents the radicle of a coupling component.

Such agents are, for example, compounds of chromium, copper iron, cobalt, nickel, manganese, zinc, vanadium and titanium.

As coupling components there may be used all those which come into consideration for'the production of azo-dyestufis, such as for example arylamines, phenols, napthols, as well astheir substitution products which may contain for example halogens, sulfonic groups alkyl-, nitro, or alkoxy-groups, as also compounds of which the carbon atom capable of coupling belongs to a heterocyclic ring or to an open chain. The former is for example the case with pyrazolones, hydroxyquinolines and loarbituric acids, as well as with e their substitution products which-may contain a for example halogens, sulfonic groups, alkyl-, ni-

tro-, or alkoxy-groups, the latter for instance with the acetoacetic acid derivatives and the benzoylaceto-o-carboxylic acids.

By the invention metalliferous-dyestufis are obtained which contain only one. metal or .several metals. In making those which have more than one metal the several agents yielding metals may act either in succession or together.

The treatment with the agent yielding metal may occur in acid; neutral or alkaline medium, with or without suitable additions. such as for example common salt; Glaubers salt, sodium acetate, alkali phosphate, acids, such as forinstance acetic acid, formic acid or oxalic acid, and under normal or increased pressure; also in the course of the manufacture of the dyestuff or in the dye-bath.

The complex metal compounds nade according to the invention may be used for dyeing materials of any kind, such as wool, silk, cotton,

leather, artificial silk derived fromregenerated cellulose, cellulose esters and ethers, lacquers made from a cellulose basis anda natural or artificial resin basis; or as pigments or in printing. The colors are of various tints and the dyeings are very fast. I

The following examples illustrate the invention, the parts being by weight;-

Example. 1

OH HO are dissolved in 400 parts of water and, after addition of a solution of 5 per cent. strength of chromium fluoride corresponding with 7.6 parts of ClzDs, thewhole is boiled for 3 hours in a reflux apparatus. Any excess of chromium is then precipitated by addition of some sodium carbonate, the" precipitate is filtered and the filtrate is evaporated. [-In this manner there is obtained a dark powder which dissolves in concentrated sulfuric acid to a blue-violet solution and in water to a violet solution. The dyestufi dyes wool in an acid bathfast blue tints.

. Example 2 7 54.8 parts'of themono-sodium salt of'the dyestuff from diazotized l-amino-2-hydroxy naphthalene-4zfi-disulfonic acid and 1-phenyl-3- methyl-5-pyrazolone of the formula SOaH orange-yellow solution and in water to a bluishred solution. The dyestuff dyes wool in an acid bath fast rose tints.

Example 3 52.4 parts of the sodium salt of the dyestuif from diazotized 1-amino-2-hydroxynaphthalene- 4:6-disulfonic acid and barbituric acid of the formula are dissolved in 800 parts of water and after addition of a solution of 10 per cent. strength of chromium sulfate, corresponding with 7.6 parts of CrzOa, the whole is boiled for about 3 hours in a reflux apparatus. On cooling, the greater part of the dyestufi crystallizes; it is filtered and dried. It is a light brown powder, soluble in concentrated sulfuric acid to a red-orange solution and in water to a red solution; it dyes wool in an acid bath very pure, fast red tints.

Example 4 v 62.8 parts of the monosodium salt of the dyestuff from diazotized 1-amino-2-hydroxynaphthalene-4:6-disulphonic acid and 1- (phenyl3'-sulfamide) -3 -methyl 5 pyrazolone of the formula Example 5 62.9 parts of the azo-dyestuff from diazotized 1 amino-2-hydroxynaphthalene -4; 6 disulfonic acid and 1-(pheny1-3'-sulfonic acid) -3-methyl- 5-pyrazolone of the formula nols are dissolved in 250 parts of water and, after addition of 7.6 parts of Cr -203, in the form of a chromium fluoride solution, the whole is boiled for 3 hours in a reflux apparatus. On cooling, the dyestuff separates in greater part in a crystalline form. After filtration and drying, it is a dark red powder, soluble in water to a red solution and in strong sulfuric acid to a yellow solution. It dyes wool in an acid bath pure rose tints very fast to light.

Example 6 parts of the azo-dyestuff from diazotized 1- aminoe2-hydroxynaphthalene-4 fi-disulfonic acid and l-hydroxynaphthaleneiz8-disulfonic acid of the formula OH SIOaH l H03 SOQH are dissolved in 600 parts of hot water and, after the addition of a solution of chromium fluoride corresponding with 15.2 parts of CI'2O3, the whole is boiled for some hours in a reflux apparatus. Any excess of chromium which may be present is precipitated by addition of some sodium carbonate, the solution is filtered and evaporated on the water-bath. There is thus obtained a dark powder of bronze lustre, which dissolves in water and in concentrated sulfuric acid to a blueviolet solution. The dyestuff dyes Wool in a bath containing sulfuric acid pure blue tints fast to light.

Example 7 52.8 parts of the dyestuff from diazotized 1- amino 2 hydroxynaphthalene 4:6 disulfonic acid and 2:4-dihydroxybenzene-1-carb0xylic acid of the formula COOH HO: I

chromium is precipitated, the precipitate is filtered and the filtrate evaporated. There is obtained a dyestuff in-the form of a powder of bronze lustre which dissolves in water to a violet solution and in concentrated sulfuric acid to a red violet solution; it yields violet prints on cotton.

Example 8 54.8 parts of the dyestuffs from diazotized lamino-2-hydroxynaphthalene4 6-disulfonic acid and 1-phenyl-3-methy1-5-pyrazolone of the formula l |1':NO-GOHa OH 110-0 N S OzH are dissolved in 1000 parts of water and, after addition of an aqueous solution of 25 parts of crystallized copper sulfate, the whole is heated to boiling for a short time. On addition of common salt, the copper compound is precipitated; when dry, the dyestuff is a brownish powder, soluble in water to a red solution and in concentrated sulfuric acid to an orange red solution. It dyes wool red tints.

Example 9 51.? parts of the dyestuff, made by coupling diazotized l -amino-2 -hydroxynaphthalene-4 6- disulfonio acid with ,B-naphthol of the formula are dissolved in 100 parts of hot water and, after addition of an aqueous solution of 28 parts of crystallized nickel sulfate and 27 parts of crystalline sodium acetate, the whole is boiled for a short time. The dyestufi is then salted out. It is a dark powder, soluble in water to a red-violet solution and in concentrated sulfuric acid to a blue solution. It dyes wool red-violet tints.

Example 10 54.8 parts of the monosodium salt of the dyestuif from diazotized l-amino-Z-hydroxynaphthalene-4:6-disulfonic acid and 1-phenyl-3- methyl-5-pyrazolone of the formula N N fi fil-Clila HO-C N l HOiS sole are dissolved in 600 parts of hot water and, after addition of 12 parts of ammonium vanadate, the whole is boiled for about an hour. After cooling, the liquid is acidified with some hydrochloric acid and the dyestuif is precipitated by addition of common salt. When dry, the dyestufi. is a dark powder, soluble in water to a red solution and in concentrated sulfuric acid to an orangered solution; it dyes wool in an acid bath red tints.

Example 11 34.1 parts of 1-amino-2-hydroxynaphthalene- 4:6-disulfonic acid are diazotized in known manner and then mixed with an aqueous solution of 25 parts of crystallized copper sulphate the whole is then added to a caustic alkaline solution of resorcinol. When coupling is complete the whole is boiled, then filtered if necessary, neutralized and the cupriferous dyestuif salted out from the azo-dyestuff of the formula HOaS I SOsH The latter is, when dry, a dark powder which dissolves in water and in concentrated sulfuric acid to red solutions. It dyes wool in an acid bath violet tints.

Example 12 0.2-0.4 part of the azo-dyestuff from diazotized 1-amino-Z-hydroxynaphthalen 4:6 disulfonic acid and 1-hydroxynaphthalene-4:8-disulfonic acid of the formula OH SIOQH Example 13 A dye-bath is prepared with 3 per cent. of sulfuric acid of 66 B. and wool is handled therein at C. for 10-15 minutes. The well dissolved dyestuff of Example 5 is then added and dyeing is continued for /2 hour at 60C., the temperature is then gradually raised to the boil and a further 5 per cent. of sulfuric acid of 66 Be. is added; the whole is boiled for A2 to hour to complete development' of the tint. The Wool is dyed pure rose tints very fast to light.

Example .14

For 100 parts of ordinary silk 2 parts of the dyestuff of Example 1 are dissolved in the necessary quantity of boiling water. This solution and 6-8 parts of acetic acid are added to the dye-bath; the goods are entered at 50-60" C., the bath warmed gradually to C. and this temperature-rnaintained for to 1 hour.' There then follow Washing, brightening in the usual manner and drying. The silk is dyed fast blue tints.

What we claim is: a

1. Process for the manufacture of metalliferous dyestuffs, consisting in reacting with agents yielding metals capable of forming lakes the lake-forming groups of the dyestufis, dyestuffs of the general formula with I SOaH wherein R represents the radicle of a coupling component. g

2. Process for the manufacture of metalliferous dyestuffs, consisting in reacting with agents yielding metals of the atomic weight 52 to 66, amdyestuffs of the general formula wherein R represents the radicle of a coupling component.

3. Process for the manufacture of chromiferous dyestuffs, consisting in reacting with agents yielding chromium, azo-dyestuffs of the general formula SOaH wherein R represents the radicle of a coupling component.

4. Process for the manufacture of chromiferous dyestuffs, consisting in reacting with agents yielding chromium, azo-dyestulfs of the general formula whereinR represents an aryl radicle capable of coupling.

5. Process for the manufacture of chromiferous dyestuffs, consisting in reacting with agents yielding chromium, azo-dyestufis of the general formula SOrH wherein R represents a naphthalene radicle capable of coupling.

6. Process for the manufacture of a chromiferous dyestuif, consisting in reacting with agents yielding chromium, the azo-dyestuif of the formula wherein R represents the radicle of such a coupling component of which the carbon atom linked with the N=N bridge belongs to a heterocyclic ring.

' 8. Process for the manufacture of chromiferous dyestuffs, consisting in reacting with agents yielding chromium, aZo-dyestuffs of the general formula l SOaH wherein R represents the radicle of such a coupling component of which the. carbon atom linked with the -'N=N- bridge belongs to a pyrazolone ring.

9. Process for the manufacture of a chromiferous dyestuff, consisting in reacting with agents yielding chromium, the aZo-dyestuif of the formula N OH I HOaS I S OaH SO3H 13C,

10. The metalliferous azo-dyestufis, which azodyestuffs correspond with the general formula I IIT=NR SOCZH wherein R represents the radicle of a coupling component, which products form brown to red to dark colored powders, dissolving in concentrated sulfuric acid to yellow to orange to red to violet to blue solutions, and dyeing wool rose to red to violet to blue tints.

11. The metalliferous azo-dyestuifs, which contain metals of the atomic weight 52 to 66, which azo-dyestuffs correspond with the general formula HOsS SOaH

wherein R represents the radicle of a coupling component, which products form brown to red to dark colored powders, dissolving in concentrated sulfuric acid to yellow to orange to red to violet to blue solutions, and dyeing wool rose to red to violet to blue tints.

12. Chromiferous azo-dyestufis, which azodyestuffs correspond with the general formula son wherein R represents the radicle of a coupling component, which products form brown to red to dark colored powders, dissolving in concentrated sulfuric acid to yellow to orange to red to violet to blue solutions, and dyeing wool rose to red to violet to blue tints.

l3. Chromiierous azo-dyestuffs, which azodyestufis correspond with the general formula SOaH wherein it represents an aryl radicle capable of coupling, which products form brown to red to dark colored powders, dissolving in concentrated sulfuric acid to yellow to orange to red to violet to blue solutions, and dyeing wool rose to red to violet to blue tints.

14. Chromiferous azo-dyestuffs, which azodyestuffs correspond with the general formula HOaS SOsH

wherein R represents a naphthalene radicle capable of coupling, which products form brown to red to dark colored powders, dissolving in concentrated sulfuric acid to yellow to orange to red to violet to blue solutions, and dyeing wool rose to red to violet to blue tints.

15. A chromiferous azo-dyestuff, which azodyestuff corresponds with the formula OaH which product forms a dark colored powder, dissolving in concentrated sulfuric acid to a blueviolet solution and dyeing wool blue tints.

16. Chromiferous azo-dyestuffs, which azodyestuffs correspond with the general formula Hols OaH

SOaH

wherein R represents the radicle of such a coupling component of which the carbon atom linked withthe -N=N- bridge belongs to a pyrazolone ring, which products form brown to red to dark colored powders, dissolving in concentrated sulfuric acid to yellow to orange to red solutions, and dyeing wool rose to red tints.

18. A chromiferous azo-dyestufr, which azodyestufi corresponds with the formula l O SOaH which product forms a dark red powder, dissolving in concentrated sulfuric acid to a yellow solution, and dyeing wool rose tints.

SOIH

FRITZ STRAUB. WALTER HANHART. 

